http://www.prima-racing.com/bridgestone ... -part-two/
Short answer is that the RE-71R is basically the same performance as the NT01, even though they have a different feel and both could have benefited from some suspension tuning.
In the end, the data indicated that the delta between the two tires was non-existent.
This won't do anything to quiet the debate about whether the RE-71R is a 200 TW cheater tire. However, anybody who saw what good drivers were doing at 2015 AX events on RE-71R tires is probably not too surprised.